Characterization of milk properties with a radiative transfer
model

The authors are with the University of Kentucky, Lexington, Kentucky
40546-0276. C. L. Crofcheck (ccrofche@bae.uky.edu) and F. A. Payne
(fpayne@bae.uky.edu) are with the Department of Biosystems and
Agricultural Engineering.

M. P. Mengüç (menguc@engr.uky.edu) is with
the Department of Mechanical Engineering.

Abstract

To characterize milk through light-scattering measurements, a semianalytical
radiative transfer model was used to simulate the backscatter of light in milk having
homogenized fat levels from 0.05 to 3.2 wt. %. The input parameters to the model
include the incident wavelength, refractive index of particles and medium, and
particle number densities. By varying the wavelength, we can obtain a reasonable fit
between experimental data and the model for lower fat milks. Results indicate that
the model is most sensitive to the particle diameter and size distribution and less
sensitive to the number and index of refraction of the particles.

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